Before Christina Hendricks, 37, started playing sexy secretary Joan Holloway, she was a model and actress in such shows as "ER" and "Firefly." Here's Hendricks in 2007. ( Frazer Harrison / Getty Images)

Before Christina Hendricks, 37, started playing sexy secretary Joan...

Christina Hendricks in 2012, at the Toronto International Film Festival in September. She was at the premiere of "Ginger & Rosa," a movie set in 1960s London and starring her and Elle Fanning. (Alberto E. Rodriguez / Getty Images)

Christina Hendricks in 2012, at the Toronto International Film...

Christina Hendricks in 2012, at the Toronto International Film... Photo-3487015.49435 - SFGate

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Hendricks pre-"Mad Men" fame, at the 2005 GLAAD Media Awards. She's been nominated for an Emmy for her work in "Mad Men." (Frederick M. Brown / Getty Images)

Elisabeth Moss, 30, has been acting since she was a kid. As a teen, she was in "Picket Fences" and played Zoey Bartlet in "The West Wing." She's pictured in 2004 at New York Fashion Week. (Getty Images)

Elisabeth Moss, 30, has been acting since she was a kid. As a teen,...

Elisabeth Moss, 30, has been acting since she was a kid. As a teen,... Photo-3487017.49435 - SFGate

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Moss on Sept. 4, 2012, debuting a dramatic, blond pixie cut at the GQ Men of the Year Awards. Moss is also up for an Emmy, for best actress. (Ben Pruchnie / Getty Images)

Vincent Kartheiser, a 33-year-old screen actor since the 90s, first got widespread notice in "Angel," a spinoff of "Buffy the Vampire Slayer." He also did in the 2004 indie movie "Dandelion," for which he's pictured here. (Getty Images)

Vincent Kartheiser, a 33-year-old screen actor since the 90s, first...

Before Jon Hamm, 41, became Don Draper, he was mostly known as the boyfriend of actress and screenwriter Jennifer Westfeldt. Here's the couple in 2003. (Getty Images)

Before Jon Hamm, 41, became Don Draper, he was mostly known as the...

Before Jon Hamm, 41, became Don Draper, he was mostly known as the... Photo-3487031.49435 - SFGate

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Jon Hamm in 2012, with January Jones, at a PaleyFest event for "Mad Men." Hamm is up for an best acting Emmy this year. (Jason Merritt / Getty Images)

Jon Hamm in 2012, with January Jones, at a PaleyFest event for "Mad...

Jon Hamm in 2012, with January Jones, at a PaleyFest event for... Photo-3487032.49435 - SFGate

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Jon Hamm before he was in "Mad Men," taking part in an animal-welfare fundraiser in 2005 with longtime girlfriend Jennifer Westfeldt. (Getty Images)

Jon Hamm before he was in "Mad Men," taking part in an...

Jon Hamm before he was in "Mad Men," taking part in an... Photo-3487033.49435 - SFGate

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Jon Hamm (R) is now so famous that he doesn't need his once better known girlfriend with him to garner attention. He's pictured on Sept. 6, 2012, at the Democratic National Convention in Charlotte, North Carolina. (Chip Somodevilla / Getty Images)

Jon Hamm (R) is now so famous that he doesn't need his once better...

Jon Hamm (R) is now so famous that he doesn't need his once... Photo-3487034.49435 - SFGate

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Recognize this guy? It's Jared Harris in 2001, before he played the tragic Lane Pryce. His portrayal in "Mad Men" has snagged him his first Emmy nomination - for best supporting actor. (Getty Images)

Recognize this guy? It's Jared Harris in 2001, before he played the...

Before January Jones, 34, started dating Josh Groban and playing Betty Draper, she dated Ashton Kutcher. They're pictured at the 2000 premiere of "Dude, Where's my Car?" (Getty Images)

Before January Jones, 34, started dating Josh Groban and playing...

Before January Jones, 34, started dating Josh Groban and playing... Photo-3487039.49435 - SFGate

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January Jones also hung out with people like Paris Hilton in her pre-"Mad Men" days. Photo from 2001. (Getty Images)

January Jones also hung out with people like Paris Hilton in her...

January Jones also hung out with people like Paris Hilton in her... Photo-3487040.49435 - SFGate

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And she didn't look like she had a stylist. Jones is pictured at an E! Online "Sizzlin' 16" party in 2002. (Getty Images)

And she didn't look like she had a stylist. Jones is pictured at an...

And she didn't look like she had a stylist. Jones is pictured... Photo-3487041.49435 - SFGate

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These days, January Jones often looks polished on the red carpet. She's pictured at a Schiaparelli And Prada event at the Met's Costume Institute Gala on May 7, 2012. (Larry Busacca / Getty Images)

These days, January Jones often looks polished on the red carpet....

These days, January Jones often looks polished on the red carpet.... Photo-3487042.49435 - SFGate

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January Jones at the Season 5 premiere of "Mad Men." (Random trivia: Did you know Jones was in "Dirty Dancing: Havana Nights" in 2004?) (Frazer Harrison / Getty Images)

January Jones at the Season 5 premiere of "Mad Men." (Random...

January Jones at the Season 5 premiere of "Mad Men."... Photo-3487044.49435 - SFGate

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Kiernan Shipka made her onscreen debut in "ER" at five months old, before appearing in many commercials and print ads. She's pictured in 2009 at the Screen Actors Guild Awards. (Jason Merritt / Getty Images)

Kiernan Shipka made her onscreen debut in "ER" at five months old,...

Kiernan Shipka made her onscreen debut in "ER" at five... Photo-3487045.49435 - SFGate

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Kiernan Shipka, now 12, attends the Young Hollywood Awards on June 14, 2012. After appearing in shows like "Heroes" and "MADtv," she landed the role of Sally Draper when she was 6. (Valerie Macon / Getty Images)

John Slattery, 50, has made silver hair sexy for a long time. But back in 2006, he sported some darker locks for the screening of "Flags Of Our Fathers." (Getty Images)

John Slattery, 50, has made silver hair sexy for a long time. But...

John Slattery, 50, has made silver hair sexy for a long time. But... Photo-3487050.49435 - SFGate

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John Slattery in 2012, at the GQ Men of the Year Awards on Sept. 4. (Ben Pruchnie / Getty Images)

John Slattery in 2012, at the GQ Men of the Year Awards on Sept. 4....

John Slattery in 2012, at the GQ Men of the Year Awards on Sept. 4.... Photo-3487051.49435 - SFGate

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Cara Buono (R), looking very different from Dr. Faye Miller, the character she played in "Mad Men's" Season 4 in 2010. Buono is pictured with Jill Hennessy for the premiere of "Two Ninas" in 2001. (Getty Images)

Robert Morse, 81, was a Broadway actor and singer in his younger years, winning a 1962 Tony for his performance in "How to Succeed in Business without Really Trying." Morse is pictured in 2001 with daughter Allyn. (Getty Images)

Robert Morse, 81, was a Broadway actor and singer in his younger...

Robert Morse, 81, was a Broadway actor and singer in his younger... Photo-3487059.49435 - SFGate

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Robert Morse as the eccentric Bertram Cooper. Besides his vast Broadway career, Morse also played Dewey Hogg in "The Dukes of Hazzard." Photo: AMC.

Robert Morse as the eccentric Bertram Cooper. Besides his vast...

Robert Morse as the eccentric Bertram Cooper. Besides his vast... Photo-3487060.49435 - SFGate